undefect. CWE-407 — 63 sites patched across 27 ecosystems
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
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test/jdk/java/util/zip/ChecksumBase.java
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205
test/jdk/java/util/zip/ChecksumBase.java
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/*
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* Copyright (c) 2014, 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.lang.foreign.MemorySegment;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.nio.charset.StandardCharsets;
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import java.util.zip.Checksum;
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/**
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* Base class for Checksum tests
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*/
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public class ChecksumBase {
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private static final byte[] BYTES_123456789 = "123456789".getBytes(StandardCharsets.US_ASCII);
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public static void testAll(Checksum checksum, long expected) {
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testBytes(checksum, expected);
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testByteArray(checksum, expected);
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testWrappedMemorySegment(checksum, expected);
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testWrappedByteBuffer(checksum, expected);
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testReadonlyByteBuffer(checksum, expected);
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testDirectByteBuffer(checksum, expected);
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testByteArrayOffset(checksum, expected);
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testDirectByteBufferOffset(checksum, expected);
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testLittleEndianDirectByteBufferOffset(checksum, expected);
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testWrappedByteBufferOffset(checksum, expected);
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testLittleEndianWrappedByteBufferOffset(checksum, expected);
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testReadonlyByteBufferOffset(checksum, expected);
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testLittleEndianReadonlyByteBufferOffset(checksum, expected);
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}
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private static void testBytes(Checksum checksum, long expected) {
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checksum.reset();
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for (byte bits : BYTES_123456789) {
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checksum.update(bits);
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}
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checkChecksum(checksum, expected);
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}
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private static void testByteArray(Checksum checksum, long expected) {
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checksum.reset();
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checksum.update(BYTES_123456789);
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checkChecksum(checksum, expected);
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}
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private static void testWrappedByteBuffer(Checksum checksum, long expected) {
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checksum.reset();
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ByteBuffer bb = ByteBuffer.wrap(BYTES_123456789);
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checksum.update(bb);
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checkChecksum(checksum, expected);
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}
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private static void testWrappedMemorySegment(Checksum checksum, long expected) {
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checksum.reset();
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ByteBuffer bb = MemorySegment.ofArray(BYTES_123456789).asByteBuffer();
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checksum.update(bb);
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checkChecksum(checksum, expected);
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}
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private static void testReadonlyByteBuffer(Checksum checksum, long expected) {
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checksum.reset();
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ByteBuffer bb = ByteBuffer.wrap(BYTES_123456789).asReadOnlyBuffer();
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checksum.update(bb);
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checkChecksum(checksum, expected);
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}
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private static void testDirectByteBuffer(Checksum checksum, long expected) {
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checksum.reset();
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ByteBuffer bb = ByteBuffer.allocateDirect(BYTES_123456789.length);
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bb.put(BYTES_123456789);
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bb.rewind();
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checksum.update(bb);
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checkChecksum(checksum, expected);
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}
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private static void checkChecksum(Checksum checksum, long expected) {
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if (checksum.getValue() != expected) {
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throw new RuntimeException("Calculated checksum result was invalid."
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+ " Expected " + Long.toHexString(expected)
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+ ", but got " + Long.toHexString(checksum.getValue()) + ".");
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}
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}
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private static void testByteArrayOffset(Checksum checksum, long expected) {
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byte[] unaligned_bytes_123456789 = new byte[BYTES_123456789.length + 64];
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for (int i = 0; i < unaligned_bytes_123456789.length - BYTES_123456789.length; i++) {
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checksum.reset();
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System.arraycopy(BYTES_123456789, 0, unaligned_bytes_123456789, i, BYTES_123456789.length);
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checksum.update(unaligned_bytes_123456789, i, BYTES_123456789.length);
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checkChecksumOffset(checksum, expected, i);
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}
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}
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private static void testDirectByteBufferOffset(Checksum checksum, long expected) {
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byte[] unaligned_bytes_123456789 = new byte[BYTES_123456789.length + 64];
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for (int i = 0; i < unaligned_bytes_123456789.length - BYTES_123456789.length; i++) {
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checksum.reset();
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ByteBuffer bb = ByteBuffer.allocateDirect(unaligned_bytes_123456789.length);
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System.arraycopy(BYTES_123456789, 0, unaligned_bytes_123456789, i, BYTES_123456789.length);
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bb.put(unaligned_bytes_123456789);
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bb.position(i);
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bb.limit(i + BYTES_123456789.length);
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checksum.update(bb);
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checkChecksumOffset(checksum, expected, i);
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}
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}
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private static void testLittleEndianDirectByteBufferOffset(Checksum checksum, long expected) {
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byte[] unaligned_bytes_123456789 = new byte[BYTES_123456789.length + 64];
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for (int i = 0; i < unaligned_bytes_123456789.length - BYTES_123456789.length; i++) {
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checksum.reset();
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ByteBuffer bb = ByteBuffer.allocateDirect(unaligned_bytes_123456789.length);
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bb.order(ByteOrder.LITTLE_ENDIAN);
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System.arraycopy(BYTES_123456789, 0, unaligned_bytes_123456789, i, BYTES_123456789.length);
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bb.put(unaligned_bytes_123456789);
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bb.position(i);
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bb.limit(i + BYTES_123456789.length);
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checksum.update(bb);
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checkChecksumOffset(checksum, expected, i);
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}
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}
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private static void testWrappedByteBufferOffset(Checksum checksum, long expected) {
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byte[] unaligned_bytes_123456789 = new byte[BYTES_123456789.length + 64];
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for (int i = 0; i < unaligned_bytes_123456789.length - BYTES_123456789.length; i++) {
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checksum.reset();
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System.arraycopy(BYTES_123456789, 0, unaligned_bytes_123456789, i, BYTES_123456789.length);
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ByteBuffer bb = ByteBuffer.wrap(unaligned_bytes_123456789);
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bb.position(i);
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bb.limit(i + BYTES_123456789.length);
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checksum.update(bb);
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checkChecksumOffset(checksum, expected, i);
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}
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}
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private static void testLittleEndianWrappedByteBufferOffset(Checksum checksum, long expected) {
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byte[] unaligned_bytes_123456789 = new byte[BYTES_123456789.length + 64];
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for (int i = 0; i < unaligned_bytes_123456789.length - BYTES_123456789.length; i++) {
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checksum.reset();
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System.arraycopy(BYTES_123456789, 0, unaligned_bytes_123456789, i, BYTES_123456789.length);
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ByteBuffer bb = ByteBuffer.wrap(unaligned_bytes_123456789);
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bb.order(ByteOrder.LITTLE_ENDIAN);
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bb.position(i);
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bb.limit(i + BYTES_123456789.length);
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checksum.update(bb);
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checkChecksumOffset(checksum, expected, i);
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}
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}
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private static void testReadonlyByteBufferOffset(Checksum checksum, long expected) {
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byte[] unaligned_bytes_123456789 = new byte[BYTES_123456789.length + 64];
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for (int i = 0; i < unaligned_bytes_123456789.length - BYTES_123456789.length; i++) {
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checksum.reset();
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System.arraycopy(BYTES_123456789, 0, unaligned_bytes_123456789, i, BYTES_123456789.length);
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ByteBuffer bb = ByteBuffer.wrap(unaligned_bytes_123456789).asReadOnlyBuffer();
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bb.position(i);
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bb.limit(i + BYTES_123456789.length);
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checksum.update(bb);
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checkChecksumOffset(checksum, expected, i);
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}
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}
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private static void testLittleEndianReadonlyByteBufferOffset(Checksum checksum, long expected) {
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byte[] unaligned_bytes_123456789 = new byte[BYTES_123456789.length + 64];
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for (int i = 0; i < unaligned_bytes_123456789.length - BYTES_123456789.length; i++) {
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checksum.reset();
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System.arraycopy(BYTES_123456789, 0, unaligned_bytes_123456789, i, BYTES_123456789.length);
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ByteBuffer bb = ByteBuffer.wrap(unaligned_bytes_123456789).asReadOnlyBuffer();
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bb.order(ByteOrder.LITTLE_ENDIAN);
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bb.position(i);
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bb.limit(i + BYTES_123456789.length);
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checksum.update(bb);
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checkChecksumOffset(checksum, expected, i);
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}
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}
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private static void checkChecksumOffset(Checksum checksum, long expected, int offset) {
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if (checksum.getValue() != expected) {
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throw new RuntimeException("Calculated CRC32C result was invalid. Array offset "
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+ offset + ". Expected: " + Long.toHexString(expected) + ", Got: "
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+ Long.toHexString(checksum.getValue()));
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}
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}
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}
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